This plug-in currently has the following main capabilities that can be activated:
Scans web pages for links (in text or images) to VRML or X3D files (and other file formats compatible with the X_ITE X3D Browser, such as glTF, obj, and STL) and inserts "eye-cons" (👁) next to each of them. When you click the eye, it embeds a viewer and displays the model in 3D within the page. Right-click on an active viewer for additional options. Click the eye again to close the viewer. Supports multiple simultaneous viewers on the same page.
Be sure to visit George Hart's Encyclopedia of Polyhedra with this module enabled for a trove of beautiful models to play with.